Commented out code

[Beliavsky]

Comment lines in source code should be explanatory and not be commented out code. (Many people do this, including me, but commented out code should not be in the final version of a code.) It would be nice if Fortitude could warn about commented out code. The rule could be to warn about comment lines that would be valid source code if the leading ! were removed.

An example of a code where many but not all of the comment lines are commented out code is

https://github.com/CQPES/Model-Zoo/blob/main/CH3CN-CC-2023/src/ch3cn_pipnn.f90